#include "crypto.h"

void CRC32Generator::update_impl(const void *ptr, const size_t size) noexcept {
#define CRC32C(c, d) ((c) = ((c) >> 8) ^ crc_c[((c) ^ (d)) & 0xFF])
        static const unsigned int crc_c[256] =
            {
                0x00000000,
                0x77073096,
                0xee0e612c,
                0x990951ba,
                0x076dc419,
                0x706af48f,
                0xe963a535,
                0x9e6495a3,
                0x0edb8832,
                0x79dcb8a4,
                0xe0d5e91e,
                0x97d2d988,
                0x09b64c2b,
                0x7eb17cbd,
                0xe7b82d07,
                0x90bf1d91,
                0x1db71064,
                0x6ab020f2,
                0xf3b97148,
                0x84be41de,
                0x1adad47d,
                0x6ddde4eb,
                0xf4d4b551,
                0x83d385c7,
                0x136c9856,
                0x646ba8c0,
                0xfd62f97a,
                0x8a65c9ec,
                0x14015c4f,
                0x63066cd9,
                0xfa0f3d63,
                0x8d080df5,
                0x3b6e20c8,
                0x4c69105e,
                0xd56041e4,
                0xa2677172,
                0x3c03e4d1,
                0x4b04d447,
                0xd20d85fd,
                0xa50ab56b,
                0x35b5a8fa,
                0x42b2986c,
                0xdbbbc9d6,
                0xacbcf940,
                0x32d86ce3,
                0x45df5c75,
                0xdcd60dcf,
                0xabd13d59,
                0x26d930ac,
                0x51de003a,
                0xc8d75180,
                0xbfd06116,
                0x21b4f4b5,
                0x56b3c423,
                0xcfba9599,
                0xb8bda50f,
                0x2802b89e,
                0x5f058808,
                0xc60cd9b2,
                0xb10be924,
                0x2f6f7c87,
                0x58684c11,
                0xc1611dab,
                0xb6662d3d,
                0x76dc4190,
                0x01db7106,
                0x98d220bc,
                0xefd5102a,
                0x71b18589,
                0x06b6b51f,
                0x9fbfe4a5,
                0xe8b8d433,
                0x7807c9a2,
                0x0f00f934,
                0x9609a88e,
                0xe10e9818,
                0x7f6a0dbb,
                0x086d3d2d,
                0x91646c97,
                0xe6635c01,
                0x6b6b51f4,
                0x1c6c6162,
                0x856530d8,
                0xf262004e,
                0x6c0695ed,
                0x1b01a57b,
                0x8208f4c1,
                0xf50fc457,
                0x65b0d9c6,
                0x12b7e950,
                0x8bbeb8ea,
                0xfcb9887c,
                0x62dd1ddf,
                0x15da2d49,
                0x8cd37cf3,
                0xfbd44c65,
                0x4db26158,
                0x3ab551ce,
                0xa3bc0074,
                0xd4bb30e2,
                0x4adfa541,
                0x3dd895d7,
                0xa4d1c46d,
                0xd3d6f4fb,
                0x4369e96a,
                0x346ed9fc,
                0xad678846,
                0xda60b8d0,
                0x44042d73,
                0x33031de5,
                0xaa0a4c5f,
                0xdd0d7cc9,
                0x5005713c,
                0x270241aa,
                0xbe0b1010,
                0xc90c2086,
                0x5768b525,
                0x206f85b3,
                0xb966d409,
                0xce61e49f,
                0x5edef90e,
                0x29d9c998,
                0xb0d09822,
                0xc7d7a8b4,
                0x59b33d17,
                0x2eb40d81,
                0xb7bd5c3b,
                0xc0ba6cad,
                0xedb88320,
                0x9abfb3b6,
                0x03b6e20c,
                0x74b1d29a,
                0xead54739,
                0x9dd277af,
                0x04db2615,
                0x73dc1683,
                0xe3630b12,
                0x94643b84,
                0x0d6d6a3e,
                0x7a6a5aa8,
                0xe40ecf0b,
                0x9309ff9d,
                0x0a00ae27,
                0x7d079eb1,
                0xf00f9344,
                0x8708a3d2,
                0x1e01f268,
                0x6906c2fe,
                0xf762575d,
                0x806567cb,
                0x196c3671,
                0x6e6b06e7,
                0xfed41b76,
                0x89d32be0,
                0x10da7a5a,
                0x67dd4acc,
                0xf9b9df6f,
                0x8ebeeff9,
                0x17b7be43,
                0x60b08ed5,
                0xd6d6a3e8,
                0xa1d1937e,
                0x38d8c2c4,
                0x4fdff252,
                0xd1bb67f1,
                0xa6bc5767,
                0x3fb506dd,
                0x48b2364b,
                0xd80d2bda,
                0xaf0a1b4c,
                0x36034af6,
                0x41047a60,
                0xdf60efc3,
                0xa867df55,
                0x316e8eef,
                0x4669be79,
                0xcb61b38c,
                0xbc66831a,
                0x256fd2a0,
                0x5268e236,
                0xcc0c7795,
                0xbb0b4703,
                0x220216b9,
                0x5505262f,
                0xc5ba3bbe,
                0xb2bd0b28,
                0x2bb45a92,
                0x5cb36a04,
                0xc2d7ffa7,
                0xb5d0cf31,
                0x2cd99e8b,
                0x5bdeae1d,
                0x9b64c2b0,
                0xec63f226,
                0x756aa39c,
                0x026d930a,
                0x9c0906a9,
                0xeb0e363f,
                0x72076785,
                0x05005713,
                0x95bf4a82,
                0xe2b87a14,
                0x7bb12bae,
                0x0cb61b38,
                0x92d28e9b,
                0xe5d5be0d,
                0x7cdcefb7,
                0x0bdbdf21,
                0x86d3d2d4,
                0xf1d4e242,
                0x68ddb3f8,
                0x1fda836e,
                0x81be16cd,
                0xf6b9265b,
                0x6fb077e1,
                0x18b74777,
                0x88085ae6,
                0xff0f6a70,
                0x66063bca,
                0x11010b5c,
                0x8f659eff,
                0xf862ae69,
                0x616bffd3,
                0x166ccf45,
                0xa00ae278,
                0xd70dd2ee,
                0x4e048354,
                0x3903b3c2,
                0xa7672661,
                0xd06016f7,
                0x4969474d,
                0x3e6e77db,
                0xaed16a4a,
                0xd9d65adc,
                0x40df0b66,
                0x37d83bf0,
                0xa9bcae53,
                0xdebb9ec5,
                0x47b2cf7f,
                0x30b5ffe9,
                0xbdbdf21c,
                0xcabac28a,
                0x53b39330,
                0x24b4a3a6,
                0xbad03605,
                0xcdd70693,
                0x54de5729,
                0x23d967bf,
                0xb3667a2e,
                0xc4614ab8,
                0x5d681b02,
                0x2a6f2b94,
                0xb40bbe37,
                0xc30c8ea1,
                0x5a05df1b,
                0x2d02ef8d,
            };

        for (const auto *p = static_cast<const uint8_t *>(ptr), *const e = p + size; p < e; ++p) {
                CRC32C(crc32, *p);
        }

#undef CRC32C
}
